Follows an intergenerational group of citizen scientists in coastal New England as they attempt to save the Saltmarsh Sparrow from extinction — one nest at a time. Against the backdrop of rising sea levels, three retirees and a young intern forge deep bonds while scouring the saltmarsh, banding birds, and witnessing firsthand the devastating effects of climate change. Through stunning visuals and intimate storytelling, the film reveals how a disappearing bird serves as both a warning and a call to action. Yet, at its heart, BETWEEN MOON TIDES is a love story—about nature, mentorship, and the hope that comes from refusing to give up, even in the face of impossible odds.